Improved Model of Outer Core 1D Structure
We have published a new model of 1D structure of the outer core, parameterized using two different equations of state: Irving_Cottaar_Lekic_2018 Brief highlights: We infer the...[Read More...]
Quaking the Delaware
Graduate students at the University of Maryland Seismology Lab sprung into action following the M4.1 earthquake that struck Dover, Delaware on November 30, 2017. The...[Read More...]
published October 4, 2017
posted in Research
Things to consider when interpreting Sp receiver functions…
Conversions of shear waves (S) to compressional waves (P), often analyzed as Sp receiver functions, are useful for studying upper mantle layering, and have been...[Read More...]
published October 4, 2017
posted in Research
About those amplitudes…
It is well known, at least among tomographers, that our images of the Earth's interior are washed out. Lateral variations in seismic velocities are likely...[Read More...]
published October 4, 2017
posted in Research
Improvement in P-wave tomography due to EarthScope
The EarthScope project has been described as the Apollo program of the solid Earth community. It has enabled an unprecedented investment in seismic instrumentation, and...[Read More...]
published October 15, 2016
posted in Research
Reference Model of LLSVP Morphology
Using depth-dependent clustering analysis of global Vs and Vp tomographic models, we have constructed a new reference model for LLSVP shape and volume. We obtain...[Read More...]
published July 13, 2016
posted in Research
3D Reference Earth Model
REM-3D is a project funded by the National Science Foundation and carried out by Raj Moulik, Ved Lekic, Barbara Romanowicz, and Adam Dziewonski. If you have...[Read More...]
published February 14, 2016
posted in Research
Viscosity increase in the Earth’s mid mantle
Together with collaborators Max Rudolph at Portland State University and Carolina Lithgow-Bertelloni at University College London, we used a novel inversion framework to detect the...[Read More...]
published March 10, 2014
posted in Research
Lithospheric Structure of the Western United States
Using data from the EarthScope Transportable Array, we observed and modeled conversions of S waves to P waves across velocity contrasts within the lithosphere across...[Read More...]
published February 12, 2012
posted in Research
Lithospheric thinning beneath rifted regions of Southern California
Conversions of teleseismic shear (S) waves to compressional (P) waves across velocity interfaces (such as the Moho or the lithosphere-asthenosphere boundary) allow us to map...[Read More...]
Research
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Improved Model of Outer Core 1D Structure
July 7, 2018 -
February 2, 2018 -
Things to consider when interpreting Sp receiver functions…
October 10, 2017 -
October 10, 2017 -
Improvement in P-wave tomography due to EarthScope
October 10, 2017
Research
-
Improved Model of Outer Core 1D Structure
July 7, 2018 -
February 2, 2018
-
Things to consider when interpreting Sp receiver functions…
October 10, 2017